US20090167055A1 - Structural member reinforcement - Google Patents
Structural member reinforcement Download PDFInfo
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- US20090167055A1 US20090167055A1 US11/967,791 US96779107A US2009167055A1 US 20090167055 A1 US20090167055 A1 US 20090167055A1 US 96779107 A US96779107 A US 96779107A US 2009167055 A1 US2009167055 A1 US 2009167055A1
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- Prior art keywords
- reinforcement
- expandable material
- cells
- disposed
- set forth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/04—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/002—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material a foamable synthetic material or metal being added in situ
Definitions
- the present disclosure relates to a reinforcement for a structural member.
- Reinforcing structural members is beneficial to many different industries when manufacturing products to have a minimum amount of structural integrity. Often times, weight is a consideration when making such reinforcements.
- the structural member may be hollow, defining a cavity.
- a reinforcement may be placed in the cavity to strengthen the structural member, the idea being that the weight of the structural member with the reinforcement is lower than the weight of a solid structural member. This is especially true if the reinforcement is made from lighter materials than the structural member.
- the structural member may be formed from steel, whereas the reinforcement may be formed from a plastic.
- the structural integrity of the hollowed structural member with the reinforcement disposed in the cavity is especially true if the reinforcement is formed from a lighter material than the structural member.
- Increasing the structural integrity of the reinforcement may include providing the reinforcement with an internal rib structure or coating an outer surface of the reinforcement with a structural foam.
- previous configurations of the internal rib structure and the structural foam on the outside of the reinforcement have met the standards for reinforcing the structural member, other configurations of the reinforcement may further increase the structural integrity of the reinforcement and the structural member. This may be beneficial to many industries, such as the automotive or aerospace industries, where a significant increase in structural integrity with a minimum increase in weight is ideal.
- FIG. 1 is a perspective view of a reinforcement disposed in a cavity defined by a frame according to an embodiment
- FIG. 2 is a top view of the reinforcement having a plurality of cells with a hexagonal configuration and an expandable material disposed within the plurality of cells according to a first embodiment
- FIG. 3 is a top view of the reinforcement having the plurality of cells with the hexagonal configuration and the expandable material disposed within the plurality of cells according to a second embodiment
- FIG. 4 is a top view of the reinforcement of FIGS. 2 and 3 after the expandable material has expanded according to an embodiment
- FIG. 5 is a perspective view of the reinforcement having a plurality of cells with a cylindrical configuration and the expandable material disposed within the plurality of cells according to an embodiment
- FIG. 6 is a perspective view of the reinforcement having a plurality of cells with a conical configuration and the expandable material disposed within the plurality of cells according to an embodiment
- FIG. 7 is a side view of the reinforcement having a plurality of cells with a telescoping configuration and the expandable material disposed within the plurality of cells according to an embodiment.
- a reinforcement includes a body portion that has a plurality of side walls.
- the side walls define an opening, and a plurality of cells are disposed in the opening between the side walls.
- Each of the plurality of cells defines a channel, and an expandable material is disposed in the channel of at least one of the plurality of cells. Accordingly, the reinforcement may provide structural support and/or sound and vibration dampening in the cavity.
- FIG. 1 illustrates an exemplary reinforcement 10 disposed in a cavity 12 defined by a frame 14 .
- the reinforcement 10 includes a body portion 16 having a plurality of side wall 18 defining an opening therebetween.
- a plurality of cells 20 are disposed in the opening between the side wall 18 .
- Each of the plurality of cells 20 defines a channel 22 .
- the channel 22 has an open-ended configuration.
- the open-ended configuration may be further defined as a hexagonal configuration, a cylindrical configuration, a conical configuration, or a telescoping configuration.
- the various configurations may improve energy dissipation and provide additional structural integrity when forces act to compress the frame 14 and the reinforcement 10 .
- the plurality of cells 20 may be integrally formed with one another and/or integrally formed with the body portion 16 .
- the frame 14 is a vehicle frame 14 ; however, it is to be appreciated that the frame 14 and the reinforcement 10 may be used in other applications.
- Vehicle frame may be formed from steel and the body portion 16 of the reinforcement 10 may be formed from nylon.
- the reinforcement 10 may be formed using various methods, including extrusion or injection molding. It is to be further understood that the frame 14 and reinforcement 10 may be formed from other materials.
- the frame 14 defines an axis that extends through the cavity 12 .
- the reinforcement 10 may be disposed in various orientations relative to the axis.
- the reinforcement 10 may be disposed in the cavity 12 parallel to the axis.
- the channel 22 defined by the plurality of cells 20 is parallel to the axis.
- the reinforcement 10 may be disposed in the cavity 12 perpendicular to the axis.
- the channel 22 defined by the plurality of cells 20 is perpendicular to the axis.
- the various orientations of the reinforcement 10 may aid in energy dissipation, reduce crushing of the frame 14 , or have other benefits.
- an expandable material 24 is disposed in the channel 22 of at least one of the plurality of cells 20 .
- the expandable material 24 may be disposed on at least one of the plurality of side wall 18 .
- the expandable material 24 that is disposed in the channel 22 of the cells 20 is the same type of expandable material 24 that is disposed on the side wall 18 .
- the expandable material 24 of the reinforcement 10 may be formed from an epoxy-based resin.
- the expandable material 24 may be structural foam or a noise vibration and harshness (NVH) foam.
- NVH noise vibration and harshness
- the expandable material 24 may be any other material besides a structural foam or a NVH foam.
- a first expandable material 26 is disposed in the channel 22 of at least one of the cells 20 and a second expandable material 28 is disposed on at least one of the side wall 18 .
- the first expandable material 26 and the second expandable material 28 are different types of structural foams. In this embodiment, both the first expandable material 26 and the second expandable material 28 increase the structural integrity of the reinforcement 10 and the frame 14 .
- the first expandable material 26 is the NVH foam and the second expandable material 28 is the structural foam.
- the first expandable material 26 may be used to reduce noise and vibrations while the second expandable material 28 increases the structural integrity of the frame 14 .
- expanding the expandable material 24 may include heating the expandable material 24 . For instance, in a vehicle assembly line, the vehicle is heated as it passes through a paint bake oven. The heat from the paint bake oven may be used to expand the expandable material 24 .
- FIG. 2 illustrates, in one embodiment, a perspective view of the reinforcement 10 having cells 20 with the hexagonal configuration.
- the expandable material 24 is disposed inside the channels 22 defined by the cells 20 , and specifically, the expandable material 24 coats at least one of the inner walls of the cells 20 .
- the expandable material 24 is disposed at a corner between two of the inner walls of the cells 20 .
- the expandable material 24 may be disposed in the channel 22 using various methods.
- the reinforcement 10 may be over molded to include the expandable material 24 .
- the expandable material 24 may be disposed in the cells 20 via other methods. Referring now to FIG. 4 , once expanded, the expandable material 24 fills the channel 22 defined by the cells 20 having the hexagonal configuration.
- FIG. 5 illustrates, in another embodiment, a perspective view of the reinforcement 10 having the cells 20 with the cylindrical configuration.
- the expandable material 24 is disposed inside the channels 22 defined by the cells 20 , and specifically, the expandable material 24 is disposed on at least a portion of the inner wall of the cells 20 .
- the expandable material 24 may be disposed in the channel 22 using various methods. For instance, the reinforcement 10 may be over molded to include the expandable material 24 . However, it is to be understood that the expandable material 24 may be disposed in the cells 20 via other methods. Once expanded, the expandable material 24 fills the channel 22 defined by the cell 20 having the cylindrical configuration.
- the expandable material 24 may further be disposed on the body portion 16 of the reinforcement 10 having cells 20 with the cylindrical configuration.
- a bottom portion 30 of each cell 20 may define a hole.
- the expandable material 24 may include a plurality of pins 32 , each one extending through one of the holes. This may allow the expandable material 24 to remain disposed on the reinforcement 10 before the expandable material 24 is expanded.
- FIG. 6 illustrates, in yet another embodiment, a perspective view of the reinforcement 10 having the cells 20 with the conical configuration.
- the expandable material 24 is disposed inside the channels 22 defined by the cells 20 , and specifically, the expandable material 24 is disposed on at least a portion of the inner wall of the cells 20 .
- the expandable material 24 may be disposed in the channel 22 using various methods. For instance, the reinforcement 10 may be over molded to include the expandable material 24 . However, it is to be understood that the expandable material 24 may be disposed in the cells 20 via other methods. Once expanded, the expandable material 24 fills the channel 22 defined by the cell 20 having the conical configuration.
- the expandable material 24 may further be disposed on the body portion 16 of the reinforcement 10 having cells 20 with the conical configuration. As in the previous embodiment the bottom portion 30 of each cell 20 may define the hole. As such, the expandable material 24 may include the plurality of pins 32 , each one extending through one of the holes. This may allow the expandable material 24 to remain disposed on the reinforcement 10 before the expandable material 24 is expanded.
- FIG. 7 illustrates, in yet another embodiment, a side view of the reinforcement 10 having the cells 20 with the telescoping configuration.
- each cell 20 includes at least two segments 34 having different sizes, but similar shapes. As illustrated, each cell 20 has three segments 34 having a generally circular shape. However, it is to be appreciated that each cell 20 may have any number of segments 34 or generally any shape. Also, the segments 34 may be disposed in a telescoping configuration.
- the expandable material 24 is disposed inside the channels 22 defined by the cells 20 , and specifically, the expandable material 24 is disposed on at least a portion of the inner wall of the cells 20 . The expandable material 24 may be disposed in the channel 22 using various methods.
- the reinforcement 10 may be over molded to include the expandable material 24 .
- the expandable material 24 may be disposed in the cells 20 via other methods. Once expanded, the expandable material 24 fills the channel 22 defined by the cell 20 having the telescoping configuration.
- the expandable material 24 may further be disposed on the body portion 16 of the reinforcement 10 having cells 20 with the telescoping configuration.
- the bottom portion 30 of each cell 20 may define the hole.
- the expandable material 24 may include the plurality of pins 32 , each one extending through one of the holes. This may allow the expandable material 24 to remain disposed on the reinforcement 10 before the expandable material 24 is expanded.
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- Mechanical Engineering (AREA)
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- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
- 1. Field of the Invention
- The present disclosure relates to a reinforcement for a structural member.
- 2. Description of the Related Art
- Reinforcing structural members is beneficial to many different industries when manufacturing products to have a minimum amount of structural integrity. Often times, weight is a consideration when making such reinforcements. To reduce weight, the structural member may be hollow, defining a cavity. A reinforcement may be placed in the cavity to strengthen the structural member, the idea being that the weight of the structural member with the reinforcement is lower than the weight of a solid structural member. This is especially true if the reinforcement is made from lighter materials than the structural member. For instance, the structural member may be formed from steel, whereas the reinforcement may be formed from a plastic.
- Another consideration is the structural integrity of the hollowed structural member with the reinforcement disposed in the cavity. This is especially true if the reinforcement is formed from a lighter material than the structural member. Increasing the structural integrity of the reinforcement may include providing the reinforcement with an internal rib structure or coating an outer surface of the reinforcement with a structural foam. Although previous configurations of the internal rib structure and the structural foam on the outside of the reinforcement have met the standards for reinforcing the structural member, other configurations of the reinforcement may further increase the structural integrity of the reinforcement and the structural member. This may be beneficial to many industries, such as the automotive or aerospace industries, where a significant increase in structural integrity with a minimum increase in weight is ideal.
- Accordingly, despite previous attempts to increase the structural integrity of the reinforcement and the structural member, a reinforcement is needed that improves upon the internal rib structure of the previous reinforcements by increasing the structural integrity of the reinforcement and the structural member without a significant increase in weight.
- The disclosure becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:
-
FIG. 1 is a perspective view of a reinforcement disposed in a cavity defined by a frame according to an embodiment; -
FIG. 2 is a top view of the reinforcement having a plurality of cells with a hexagonal configuration and an expandable material disposed within the plurality of cells according to a first embodiment; -
FIG. 3 is a top view of the reinforcement having the plurality of cells with the hexagonal configuration and the expandable material disposed within the plurality of cells according to a second embodiment; -
FIG. 4 is a top view of the reinforcement ofFIGS. 2 and 3 after the expandable material has expanded according to an embodiment; -
FIG. 5 is a perspective view of the reinforcement having a plurality of cells with a cylindrical configuration and the expandable material disposed within the plurality of cells according to an embodiment; -
FIG. 6 is a perspective view of the reinforcement having a plurality of cells with a conical configuration and the expandable material disposed within the plurality of cells according to an embodiment; and -
FIG. 7 is a side view of the reinforcement having a plurality of cells with a telescoping configuration and the expandable material disposed within the plurality of cells according to an embodiment. - A reinforcement is provided that includes a body portion that has a plurality of side walls. The side walls define an opening, and a plurality of cells are disposed in the opening between the side walls. Each of the plurality of cells defines a channel, and an expandable material is disposed in the channel of at least one of the plurality of cells. Accordingly, the reinforcement may provide structural support and/or sound and vibration dampening in the cavity.
- Referring to the Figures, wherein like numerals indicate like or corresponding parts throughout the several views, a
reinforcement 10 is shown atnumeral 10.FIG. 1 illustrates anexemplary reinforcement 10 disposed in acavity 12 defined by aframe 14. Thereinforcement 10 includes abody portion 16 having a plurality ofside wall 18 defining an opening therebetween. A plurality ofcells 20 are disposed in the opening between theside wall 18. Each of the plurality ofcells 20 defines achannel 22. In one embodiment, thechannel 22 has an open-ended configuration. As discussed in greater detail below, the open-ended configuration may be further defined as a hexagonal configuration, a cylindrical configuration, a conical configuration, or a telescoping configuration. The various configurations may improve energy dissipation and provide additional structural integrity when forces act to compress theframe 14 and thereinforcement 10. The plurality ofcells 20 may be integrally formed with one another and/or integrally formed with thebody portion 16. - In one embodiment, the
frame 14 is avehicle frame 14; however, it is to be appreciated that theframe 14 and thereinforcement 10 may be used in other applications. Vehicle frame may be formed from steel and thebody portion 16 of thereinforcement 10 may be formed from nylon. Thereinforcement 10 may be formed using various methods, including extrusion or injection molding. It is to be further understood that theframe 14 andreinforcement 10 may be formed from other materials. - The
frame 14 defines an axis that extends through thecavity 12. Depending on the application, thereinforcement 10 may be disposed in various orientations relative to the axis. For example, thereinforcement 10 may be disposed in thecavity 12 parallel to the axis. Specifically, thechannel 22 defined by the plurality ofcells 20 is parallel to the axis. In another embodiment, thereinforcement 10 may be disposed in thecavity 12 perpendicular to the axis. Specifically, thechannel 22 defined by the plurality ofcells 20 is perpendicular to the axis. The various orientations of thereinforcement 10 may aid in energy dissipation, reduce crushing of theframe 14, or have other benefits. - Referring now to
FIGS. 2-7 , anexpandable material 24 is disposed in thechannel 22 of at least one of the plurality ofcells 20. Also, theexpandable material 24 may be disposed on at least one of the plurality ofside wall 18. In one embodiment, theexpandable material 24 that is disposed in thechannel 22 of thecells 20 is the same type ofexpandable material 24 that is disposed on theside wall 18. Theexpandable material 24 of thereinforcement 10 may be formed from an epoxy-based resin. For instance, theexpandable material 24 may be structural foam or a noise vibration and harshness (NVH) foam. However, it is to be appreciated that theexpandable material 24 may be any other material besides a structural foam or a NVH foam. In another embodiment, a firstexpandable material 26 is disposed in thechannel 22 of at least one of thecells 20 and a secondexpandable material 28 is disposed on at least one of theside wall 18. In one embodiment, the firstexpandable material 26 and the secondexpandable material 28 are different types of structural foams. In this embodiment, both the firstexpandable material 26 and the secondexpandable material 28 increase the structural integrity of thereinforcement 10 and theframe 14. In another embodiment, the firstexpandable material 26 is the NVH foam and the secondexpandable material 28 is the structural foam. In this embodiment, the firstexpandable material 26 may be used to reduce noise and vibrations while the secondexpandable material 28 increases the structural integrity of theframe 14. Regardless of the type used, expanding theexpandable material 24 may include heating theexpandable material 24. For instance, in a vehicle assembly line, the vehicle is heated as it passes through a paint bake oven. The heat from the paint bake oven may be used to expand theexpandable material 24. -
FIG. 2 illustrates, in one embodiment, a perspective view of thereinforcement 10 havingcells 20 with the hexagonal configuration. Theexpandable material 24 is disposed inside thechannels 22 defined by thecells 20, and specifically, theexpandable material 24 coats at least one of the inner walls of thecells 20. In another embodiment, referring now toFIG. 3 , theexpandable material 24 is disposed at a corner between two of the inner walls of thecells 20. Regardless of the location, theexpandable material 24 may be disposed in thechannel 22 using various methods. For instance, thereinforcement 10 may be over molded to include theexpandable material 24. However, it is to be understood that theexpandable material 24 may be disposed in thecells 20 via other methods. Referring now toFIG. 4 , once expanded, theexpandable material 24 fills thechannel 22 defined by thecells 20 having the hexagonal configuration. -
FIG. 5 illustrates, in another embodiment, a perspective view of thereinforcement 10 having thecells 20 with the cylindrical configuration. Like in the previous embodiment, theexpandable material 24 is disposed inside thechannels 22 defined by thecells 20, and specifically, theexpandable material 24 is disposed on at least a portion of the inner wall of thecells 20. Theexpandable material 24 may be disposed in thechannel 22 using various methods. For instance, thereinforcement 10 may be over molded to include theexpandable material 24. However, it is to be understood that theexpandable material 24 may be disposed in thecells 20 via other methods. Once expanded, theexpandable material 24 fills thechannel 22 defined by thecell 20 having the cylindrical configuration. In addition, theexpandable material 24 may further be disposed on thebody portion 16 of thereinforcement 10 havingcells 20 with the cylindrical configuration. In one embodiment, abottom portion 30 of eachcell 20 may define a hole. As such, theexpandable material 24 may include a plurality ofpins 32, each one extending through one of the holes. This may allow theexpandable material 24 to remain disposed on thereinforcement 10 before theexpandable material 24 is expanded. -
FIG. 6 illustrates, in yet another embodiment, a perspective view of thereinforcement 10 having thecells 20 with the conical configuration. Like in the previous embodiment, theexpandable material 24 is disposed inside thechannels 22 defined by thecells 20, and specifically, theexpandable material 24 is disposed on at least a portion of the inner wall of thecells 20. Theexpandable material 24 may be disposed in thechannel 22 using various methods. For instance, thereinforcement 10 may be over molded to include theexpandable material 24. However, it is to be understood that theexpandable material 24 may be disposed in thecells 20 via other methods. Once expanded, theexpandable material 24 fills thechannel 22 defined by thecell 20 having the conical configuration. In addition, theexpandable material 24 may further be disposed on thebody portion 16 of thereinforcement 10 havingcells 20 with the conical configuration. As in the previous embodiment thebottom portion 30 of eachcell 20 may define the hole. As such, theexpandable material 24 may include the plurality ofpins 32, each one extending through one of the holes. This may allow theexpandable material 24 to remain disposed on thereinforcement 10 before theexpandable material 24 is expanded. -
FIG. 7 illustrates, in yet another embodiment, a side view of thereinforcement 10 having thecells 20 with the telescoping configuration. Specifically, eachcell 20 includes at least twosegments 34 having different sizes, but similar shapes. As illustrated, eachcell 20 has threesegments 34 having a generally circular shape. However, it is to be appreciated that eachcell 20 may have any number ofsegments 34 or generally any shape. Also, thesegments 34 may be disposed in a telescoping configuration. Like in the previous embodiments, theexpandable material 24 is disposed inside thechannels 22 defined by thecells 20, and specifically, theexpandable material 24 is disposed on at least a portion of the inner wall of thecells 20. Theexpandable material 24 may be disposed in thechannel 22 using various methods. For instance, thereinforcement 10 may be over molded to include theexpandable material 24. However, it is to be understood that theexpandable material 24 may be disposed in thecells 20 via other methods. Once expanded, theexpandable material 24 fills thechannel 22 defined by thecell 20 having the telescoping configuration. In addition, theexpandable material 24 may further be disposed on thebody portion 16 of thereinforcement 10 havingcells 20 with the telescoping configuration. As in the previous embodiment, thebottom portion 30 of eachcell 20 may define the hole. As such, theexpandable material 24 may include the plurality ofpins 32, each one extending through one of the holes. This may allow theexpandable material 24 to remain disposed on thereinforcement 10 before theexpandable material 24 is expanded. - It is to be understood that the above description is intended to be illustrative and not restrictive. Many embodiments and applications other than the examples provided would be apparent to those skilled in the art upon reading the above description. The scope of the invention should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. It is anticipated and intended that future developments will occur in the arts discussed herein, and that the disclosed systems and methods will be incorporated into such future embodiments. In sum, it should be understood that the invention is capable of modification and variation and is limited only by the following claims.
- All terms used in the claims are intended to be given their broadest reasonable constructions and their ordinary meanings as understood by those skilled in the art unless an explicit indication to the contrary is made herein. In particular, use of the singular articles such as “a,” “the,” “said,” etc. should be read to recite one or more of the indicated elements unless a claim recites an explicit limitation to the contrary.
Claims (20)
Priority Applications (3)
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US11/967,791 US7748773B2 (en) | 2007-12-31 | 2007-12-31 | Structural member reinforcement |
PCT/EP2008/068169 WO2009083535A1 (en) | 2007-12-31 | 2008-12-22 | Structural member reinforcement |
EP08867624A EP2234803B1 (en) | 2007-12-31 | 2008-12-22 | Structural member reinforcement |
Applications Claiming Priority (1)
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US11/967,791 US7748773B2 (en) | 2007-12-31 | 2007-12-31 | Structural member reinforcement |
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US7748773B2 US7748773B2 (en) | 2010-07-06 |
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Also Published As
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US7748773B2 (en) | 2010-07-06 |
WO2009083535A1 (en) | 2009-07-09 |
EP2234803A1 (en) | 2010-10-06 |
EP2234803B1 (en) | 2012-10-17 |
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